<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link href="/static/bootstrap-3.3.7-dist/css/bootstrap.css" rel="stylesheet">
    <script src="/static/jquery-1.11.3.min.js"></script>
    <script src="/static/bootstrap-3.3.7-dist/js/bootstrap.js"></script>
</head>
<body>
<span class="glyphicon glyphicon-search" aria-hidden="true" style="font-size: 50px"></span>
<button type="button" class="btn btn-primary"><span class="glyphicon glyphicon-music" aria-hidden="true" style="font-size: 50px"></span>添加</button>
<!-- Standard button -->
<button type="button" class="btn btn-default">（默认样式）Default</button>

<!-- Provides extra visual weight and identifies the primary action in a set of buttons -->
<button type="button" class="btn btn-primary">（首选项）Primary</button>

<!-- Indicates a successful or positive action -->
<button type="button" class="btn btn-success">（成功）Success</button>

<!-- Contextual button for informational alert messages -->
<button type="button" class="btn btn-info">（一般信息）Info</button>

<!-- Indicates caution should be taken with this action -->
<button type="button" class="btn btn-warning">（警告）Warning</button>

<!-- Indicates a dangerous or potentially negative action -->
<button type="button" class="btn btn-danger">（危险）Danger</button>

<!-- Deemphasize a button by making it look like a link while maintaining button behavior -->
<button type="button" class="btn btn-link">（链接）Link</button>
</body>
</html>